小编use*_*431的帖子

为什么我总是需要在SqlAlchemy中分两步完成？

import sqlalchemy as sa
import sqlalchemy.orm as orm

engine = sa.create_engine(<dbPath>, echo=True)
Session = orm.sessionmaker(bind=engine)
my_session = Session()

为什么我不能一次性完成(它可能更简单,不是吗？):

import sqlalchemy as sa
import sqlalchemy.orm as orm

engine = sa.create_engine(<dbPath>, echo=True)
Session = orm.Session(bind=engine)